Talk:Steel/Comments

From Wikipedia, the free encyclopedia

This page needs fundamental revision. The first two paragraphs are contentious and require revision. This would require further changes to the existing text that follows.

Obvious problems are: First sentence: “(C:1000–10,8.67Fe)” - this has no clear meaning. “%” this usage of % is ambiguous – it should be mass% (as used).

2nd sentence: “and tungsten” - this is misleading as tungsten is seldom determined or quoted for commodity steels.. I thought it was plain wrong, but now understand tungsten ‘was among the first alloying elements used’ and is still used in (specialist) cutting tool steels [see http://www.azom.com/details.asp?ArticleID=1264 and http://www.itia.org.uk/Default.asp?Page=54]. The superscript reference [1] at the end of the sentence comes after the full-stop (period) so is separated from its ‘target’.

External links (at bottom of page): The first listed link “Steel Web Site” links to http://www.insaatim.com/Yazilar.asp?goster=kat&kategori=11 that is not in English but appears only marginally relevant.

I offer the following to replace the first two sentences:- Steel is a generic term for a wide range of iron (Fe) based alloys that dominate world metals usage. Historically, steel is defined as an alloy of iron and carbon (up to ~2 mass%). The wide compositional range of modern steels, including ‘ultra-low’ carbon grades (C <0.01 mass%), makes this definition inadequate. Also, some early steels and all modern successors routinely contain other elements. [re ultra-low carbon steels see: http://www.steeluniversity.org/content/html/eng/default.asp?catid=97&pageid=1016929460]

The International Iron & Steel Institute (IISI) ‘defines’ steel as “an alloy of iron and carbon containing less than 2% carbon and 1% manganese and small amounts of silicon, phosphorus, sulphur and oxygen” [see http://www.worldsteel.org/index.php?action=faqlist&id=6#12]. This is adequate for simple steels but fails to recognise the full range of modern steels that include the simple compositions defined by IISI and richer alloys in which iron is the major single constituent (by mass).

The text that follows requires modification to recognise the wide range of modern steels. In particular that alloying additions seek to achieve properties other than nominal ‘strength’ (and related mechanical properties). Corrosion resistance is but one additional consideration.

--21:07, 18 November 2007 (UTC)Engineer48 (talk)